/* ============================================================
   baurechner — Stylesheet
   Schriften lokal (DSGVO). Fehlen die Dateien in /fonts/,
   greift automatisch der System-Fallback. Siehe fonts/HINWEIS.txt
   ============================================================ */

@font-face{font-family:"Bricolage";src:url("../fonts/bricolage-600.woff2") format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Bricolage";src:url("../fonts/bricolage-700.woff2") format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-400.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-500.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-600.woff2") format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"JBMono";src:url("../fonts/jetbrains-mono-500.woff2") format("woff2");font-weight:500;font-display:swap}

:root{
  --bg:#F5F7FA; --surface:#FFFFFF; --surface-2:#EDF0F5; --surface-3:#F9FAFC;
  --line:#E1E6EE; --line-2:#CFD6E1;
  --ink:#0D1420; --ink-2:#465268; --muted:#79859A;
  --brand:#3454E8; --brand-soft:#EAEEFE;
  --warn:#D9871A; --warn-soft:#FBF2E2;
  --good:#0E9C84; --good-soft:#E4F5F1;
  --bad:#CE4126; --bad-soft:#FBECE8;
  --display:"Bricolage",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --body:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JBMono",ui-monospace,"SFMono-Regular","Cascadia Mono",Consolas,monospace;
  --r-sm:9px; --r:14px;
  --sh-1:0 1px 2px rgba(13,20,32,.05), 0 1px 1px rgba(13,20,32,.03);
  --sh-2:0 2px 4px rgba(13,20,32,.04), 0 8px 20px -10px rgba(13,20,32,.18);
  --sh-3:0 4px 8px rgba(13,20,32,.05), 0 20px 44px -22px rgba(13,20,32,.35);
  --head-h:62px;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0B0F17; --surface:#141A25; --surface-2:#1B2331; --surface-3:#111825;
    --line:#242E3D; --line-2:#334054;
    --ink:#E9EEF6; --ink-2:#A7B3C6; --muted:#7A8699;
    --brand:#7191FF; --brand-soft:#19223A;
    --warn:#EFA83E; --warn-soft:#2A2213;
    --good:#2CC3A6; --good-soft:#102A28;
    --bad:#EE6B4F; --bad-soft:#2C1815;
    --sh-1:0 1px 2px rgba(0,0,0,.4);
    --sh-2:0 2px 6px rgba(0,0,0,.35), 0 10px 24px -12px rgba(0,0,0,.7);
    --sh-3:0 4px 10px rgba(0,0,0,.4), 0 24px 48px -24px rgba(0,0,0,.85);
  }
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--head-h) + 16px);-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16.5px;line-height:1.62;-webkit-font-smoothing:antialiased}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}
a{color:var(--brand);text-underline-offset:2px}
:focus-visible{outline:2.5px solid var(--brand);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;background:var(--ink);color:var(--bg);padding:10px 16px;z-index:99;border-radius:var(--r-sm)}
.skip:focus{left:10px;top:10px}

/* Kopf */
.masthead{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.masthead .wrap{display:flex;align-items:center;gap:18px;height:var(--head-h)}
.wordmark{display:flex;align-items:center;gap:9px;font-family:var(--display);font-weight:700;font-size:18px;letter-spacing:-.025em;text-decoration:none;color:var(--ink);white-space:nowrap}
.wordmark .mk{width:23px;height:23px;border-radius:7px;background:var(--brand);display:grid;place-items:center;flex:none}
.wordmark .mk::before{content:"";width:9px;height:9px;border:2.5px solid #fff;border-top:0;border-right:0}
.navlinks{display:flex;gap:3px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.navlinks::-webkit-scrollbar{display:none}
.navlinks a{font-size:14px;color:var(--ink-2);text-decoration:none;padding:6px 11px;border-radius:99px;white-space:nowrap;transition:background .15s,color .15s}
.navlinks a:hover{background:var(--surface-2);color:var(--ink)}
.navlinks a[aria-current="page"]{background:var(--brand-soft);color:var(--brand);font-weight:500}

/* Brotkrumen + Hero */
.crumbs{font-size:13px;color:var(--muted);padding:20px 0 0}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--ink)}
.crumbs i{font-style:normal;margin:0 7px;opacity:.5}
.hero{padding:26px 0 34px;max-width:720px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--brand);background:var(--brand-soft);padding:5px 11px;border-radius:99px;margin-bottom:18px}
h1{font-family:var(--display);font-weight:700;font-size:clamp(31px,4.7vw,49px);line-height:1.06;letter-spacing:-.032em}
.standfirst{margin-top:16px;font-size:18.5px;color:var(--ink-2);max-width:60ch}

/* Rechner */
.calc{display:grid;grid-template-columns:minmax(0,352px) minmax(0,1fr);gap:24px;align-items:start}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh-2)}
.results{position:sticky;top:calc(var(--head-h) + 18px)}
.panelhead{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:15px 22px;border-bottom:1px solid var(--line)}
.panelhead h2{font-size:14px;font-weight:600;letter-spacing:-.01em}
.panelhead .sm{font-size:12.5px;color:var(--muted)}
.panelbody{padding:20px 22px 22px}

.field{margin-bottom:19px}
.field:last-child{margin-bottom:0}
.frow{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.frow label{font-size:14px;font-weight:500;color:var(--ink)}
.inputline{display:flex;align-items:stretch;border:1px solid var(--line-2);border-radius:var(--r-sm);background:var(--surface-3);overflow:hidden;width:150px;flex:none;transition:border-color .15s,box-shadow .15s}
.inputline:focus-within{border-color:var(--brand);box-shadow:0 0 0 3.5px var(--brand-soft)}
.inputline input{width:100%;min-width:0;border:0;padding:8px 10px;background:transparent;font-family:var(--body);font-variant-numeric:tabular-nums;font-weight:500;font-size:15px;color:var(--ink);text-align:right;-moz-appearance:textfield}
.inputline input::-webkit-outer-spin-button,.inputline input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.inputline input:focus{outline:none}
.inputline .unit{display:grid;place-items:center;padding:0 10px;background:var(--surface-2);border-left:1px solid var(--line);font-size:12.5px;color:var(--muted);white-space:nowrap}
.hint{font-size:12.5px;color:var(--muted);margin-top:7px;line-height:1.45}

input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:22px;background:transparent;cursor:pointer;display:block;margin-top:2px}
input[type=range]::-webkit-slider-runnable-track{height:5px;border-radius:99px;background:linear-gradient(90deg,var(--brand) var(--fill,50%),var(--surface-2) var(--fill,50%))}
input[type=range]::-moz-range-track{height:5px;border-radius:99px;background:linear-gradient(90deg,var(--brand) var(--fill,50%),var(--surface-2) var(--fill,50%))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:17px;height:17px;margin-top:-6px;border-radius:50%;background:var(--surface);border:2.5px solid var(--brand);box-shadow:var(--sh-1);transition:transform .12s}
input[type=range]::-moz-range-thumb{width:17px;height:17px;border-radius:50%;background:var(--surface);border:2.5px solid var(--brand);box-shadow:var(--sh-1)}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.18)}

.seg{display:flex;gap:3px;background:var(--surface-2);padding:3px;border-radius:var(--r-sm)}
.seg button{flex:1;border:0;background:transparent;font-family:var(--body);font-size:13.5px;font-weight:500;color:var(--ink-2);padding:7px 4px;border-radius:6px;cursor:pointer;transition:background .15s,color .15s}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--brand);box-shadow:var(--sh-1)}

select{width:100%;padding:9px 11px;border:1px solid var(--line-2);border-radius:var(--r-sm);background:var(--surface-3);font-family:var(--body);font-size:14.5px;color:var(--ink);cursor:pointer}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;cursor:pointer}
.check input{margin-top:3px;accent-color:var(--brand);width:16px;height:16px;flex:none}

/* Ergebnis */
.bigfig{padding:22px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--brand-soft),transparent);border-radius:var(--r) var(--r) 0 0}
.bigfig .k{font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted)}
.bigfig .v{font-family:var(--display);font-weight:700;font-size:clamp(38px,5.4vw,54px);line-height:1;letter-spacing:-.04em;margin-top:9px;font-variant-numeric:tabular-nums}
.bigfig .v small{font-size:.34em;font-weight:600;color:var(--muted);letter-spacing:-.01em}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(142px,1fr));gap:1px;background:var(--line)}
.tile{background:var(--surface);padding:15px 17px}
.tile .k{font-size:12.5px;color:var(--muted);line-height:1.35;min-height:2.7em}
.tile .v{font-weight:600;font-size:20px;margin-top:5px;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.note{display:flex;gap:11px;margin:16px 22px;padding:12px 14px;border-radius:var(--r-sm);font-size:13.5px;line-height:1.5}
.note b{font-weight:600}
.note-warn{background:var(--bad-soft)}
.note-warn b{color:var(--bad)}
.note-good{background:var(--good-soft)}
.note-good b{color:var(--good)}
.note .ic{font-family:var(--mono);font-weight:500;flex:none}

.mbar{display:none}
@media (max-width:900px){
  .mbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:45;gap:8px;
    background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(14px);
    border-top:1px solid var(--line);padding:9px 16px calc(9px + env(safe-area-inset-bottom));box-shadow:0 -6px 24px -12px rgba(0,0,0,.3)}
  .mbar div{flex:1;min-width:0}
  .mbar .k{font-size:10.5px;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
  .mbar .v{font-weight:600;font-size:16px;font-variant-numeric:tabular-nums;letter-spacing:-.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  body{padding-bottom:66px}
}

/* Diagramm */
.charthead{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:10px;padding:18px 22px 0}
.charthead h2{font-family:var(--display);font-weight:600;font-size:19px;letter-spacing:-.02em}
.legend{display:flex;gap:15px;font-size:12.5px;color:var(--muted);flex-wrap:wrap}
.sw{display:inline-block;width:10px;height:10px;margin-right:6px;vertical-align:-1px;border-radius:3px}
.chartnote{font-size:13.5px;color:var(--muted);padding:8px 22px 4px;max-width:72ch}
.chartwrap{position:relative;padding:0 12px 14px}
svg.chart{width:100%;height:auto;display:block}
.tip{position:absolute;pointer-events:none;opacity:0;transform:translate(-50%,-108%);background:var(--ink);color:var(--bg);
  padding:9px 12px;border-radius:var(--r-sm);font-size:12.5px;line-height:1.55;white-space:nowrap;box-shadow:var(--sh-3);transition:opacity .12s;z-index:5}
.tip b{font-weight:600;font-variant-numeric:tabular-nums}
.tip.on{opacity:1}

/* Tabellen */
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px;margin-top:24px}
.ledger{width:100%;border-collapse:collapse;font-size:14.5px}
.ledger caption{text-align:left;font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);padding:0 0 12px}
.ledger th{text-align:left;font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);font-weight:500;padding-bottom:9px;border-bottom:1px solid var(--line)}
.ledger th:last-child{text-align:right}
.ledger td{padding:10px 0;border-bottom:1px solid var(--line)}
.ledger td:last-child{text-align:right;font-variant-numeric:tabular-nums;font-weight:500}
.ledger tr.total td{font-weight:600;border-bottom:0;border-top:2px solid var(--ink);padding-top:12px}
.ledger .sub{display:block;font-size:12px;color:var(--muted);font-weight:400}
.ledger tr.hi td{background:var(--brand-soft)}

details.plan{margin-top:24px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);box-shadow:var(--sh-1);overflow:hidden}
details.plan summary{cursor:pointer;padding:15px 22px;font-size:14px;font-weight:500;list-style:none;display:flex;justify-content:space-between;align-items:center}
details.plan summary::-webkit-details-marker{display:none}
details.plan summary::after{content:"+";font-family:var(--mono);color:var(--muted);font-size:17px}
details.plan[open] summary::after{content:"\2212"}
details.plan summary:hover{background:var(--surface-3)}
.planbody{padding:0 22px 20px;overflow-x:auto}
.planbody table{width:100%;border-collapse:collapse;font-size:13.5px;font-variant-numeric:tabular-nums;white-space:nowrap}
.planbody th{text-align:right;padding:9px 12px;border-bottom:1px solid var(--line);color:var(--muted);font-weight:500;font-size:11.5px;letter-spacing:.05em;text-transform:uppercase}
.planbody th:first-child,.planbody td:first-child{text-align:left}
.planbody td{text-align:right;padding:8px 12px;border-bottom:1px solid var(--line)}
.planbody tr.mark td{background:var(--warn-soft);font-weight:600}

.adslot{margin:38px auto;padding:20px;border:1px dashed var(--line-2);border-radius:var(--r);text-align:center;color:var(--muted);
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;background:var(--surface-3);min-height:280px;display:grid;place-items:center}
.adslot.wide{min-height:110px}

/* Inhalt */
.content{display:grid;grid-template-columns:minmax(0,1fr) 236px;gap:44px;margin-top:50px;align-items:start}
.prose{max-width:70ch;font-size:17px}
.prose h2{font-family:var(--display);font-weight:600;font-size:26px;letter-spacing:-.024em;margin:42px 0 13px;scroll-margin-top:82px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:18px;font-weight:600;margin:28px 0 7px;letter-spacing:-.012em}
.prose p{margin-bottom:15px;color:var(--ink-2)}
.prose strong{color:var(--ink);font-weight:600}
.prose ul,.prose ol{margin:0 0 17px 21px;color:var(--ink-2)}
.prose li{margin-bottom:8px}
.prose table{width:100%;border-collapse:collapse;font-size:14.5px;margin:10px 0 22px}
.prose th{text-align:left;font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);font-weight:500;padding:0 12px 9px 0;border-bottom:1px solid var(--line)}
.prose td{padding:9px 12px 9px 0;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}
.prose td:first-child{font-weight:500;color:var(--ink)}
.callout{border-left:3px solid var(--brand);background:var(--brand-soft);padding:15px 18px;border-radius:0 var(--r-sm) var(--r-sm) 0;margin:22px 0;font-size:15.5px;color:var(--ink-2)}
.callout b{color:var(--ink)}

.toc{position:sticky;top:calc(var(--head-h) + 18px);font-size:13.5px}
.toc p{font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);margin-bottom:11px}
.toc a{display:block;padding:5px 0 5px 12px;border-left:2px solid var(--line);color:var(--ink-2);text-decoration:none;line-height:1.4}
.toc a:hover{border-left-color:var(--brand);color:var(--brand)}

.faq{margin-top:14px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:16px 30px 16px 0;font-weight:600;font-size:16.5px;list-style:none;position:relative;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:15px;font-family:var(--mono);color:var(--muted);font-size:18px}
.faq details[open] summary::after{content:"\2212"}
.faq .a{padding:0 0 17px;color:var(--ink-2);font-size:16px}

.author{display:flex;gap:15px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-top:30px;box-shadow:var(--sh-1)}
.author .av{width:46px;height:46px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:17px;flex:none}
.author .t{font-size:14px;color:var(--ink-2)}
.author .t b{display:block;color:var(--ink);font-size:15px;margin-bottom:3px}
.author .t .meta{margin-top:6px;font-size:12.5px;color:var(--muted)}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(252px,1fr));gap:15px;margin-top:22px}
.ccard{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;text-decoration:none;color:var(--ink);box-shadow:var(--sh-1);transition:transform .16s,box-shadow .16s,border-color .16s}
.ccard:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand)}
.ccard .ic{width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-family:var(--mono);font-size:13px;font-weight:500;margin-bottom:13px}
.ccard h3{font-family:var(--display);font-weight:600;font-size:18px;letter-spacing:-.02em;margin-bottom:6px}
.ccard p{font-size:14px;color:var(--muted);line-height:1.5}
.related{margin-top:52px;border-top:1px solid var(--line);padding-top:26px}
.related>p{font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted)}

footer{border-top:1px solid var(--line);margin-top:56px;padding:32px 0 46px;font-size:13.5px;color:var(--muted);background:var(--surface-3)}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{color:var(--ink)}
footer .legal{margin-top:13px;display:flex;gap:20px;flex-wrap:wrap}

@media (max-width:900px){
  .calc{grid-template-columns:1fr}
  .results{position:static}
  .content{grid-template-columns:1fr;gap:0}
  .toc{display:none}
  .hero{padding:20px 0 26px}
  body{font-size:16px}
  .prose{font-size:16.5px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
@media print{
  .masthead,.adslot,.toc,.mbar,.related,footer{display:none}
  body{background:#fff;font-size:11pt;padding-bottom:0}
  .card{box-shadow:none;border:1px solid #ccc;break-inside:avoid}
}